Galaxies may not be as simple as "young and blue" or "old and red." A new idea from astrophysicist Charles Steinhardt proposes a third type: red star-forming galaxies that break the mold. These galaxi ...

The following answers to this artful question each win a random book. Art is something we do, a verb. Art is an expression of our thoughts, emotions, intuitions, and desires, but it is even more ...